Structure for glazing units



J. H. ESHERTS STRUCTURE FOR GLAZING UNITS Sept. 26, I H944w Filed March 3.9, 1942 (s eawf/ia;

Patented Sept. 26, 1944 UNITED? STATES PATENT OFFICE STRUCTURE FOR GLAZING UNITS James Hervey Sherts, Pittsburgh, Pa., assignor to Pittsburgh Plate Glass Company, Allegheny County, Pa., a corporation of Pennsylvania Application March 19, 1942, Serial No. 435,386

e 8 Claims.

This invention relates to glazing panels and has particular relation to perforated panels in which yieldable elements fill the perforations;

One object of the invention is to provide an improved yieldable mounting in a glass panel to support an element free from direct contact with the glass. 7

Another object of'the invention is to provide for communication through a laminated glass panel and for the attachment of metal' or other hard elements to the panel in yieldable relation without imposing destructive strains upon the glass of the panel.

Another object of the invention is to provide an improved structure to facilitate communication from'the outside'to the inside of a multiple glazed unit.

The invention i exemplified in'a'glass panel structure inwhich a plastic plug is bonded to the glass in an opening in the panel. The plug'is adapted to receive a nipple-or pin upon which various types of'attachments can be supported yieldably. This type or plug is especially applicable to laminated glass panels in which aplastic interlayer can be integrally bonded to the plug and thus maintain firm anchorage of the latter. Arrangementsof 'this'kind .can be employed in vehicles, airplanes or buildings of various kinds in which multiple glazed units are adapted to be installed. The invention can also be applied to plain glass sheets which have not been laminated. v

In'the drawing: i

Fig. 1 is a diagrammatic fragmentary elevation of a glazing unit; Fig. 2 is a vertical section on a larger scale taken substantially along the line II--II of Fig; 1; Fig. 3 is a vertical section similar to Fig. 2 and illustrating another form oil structure; Figs. 4, 5- and 6 are vertical sections of laminated panels in whichdifferent forms of plugs have been anchored; Fig. '7 is an elevation of a panel which has not been laminated; Fig. 8 is avertical section taken substantially along the lines VIII-VIII of Fig. '7. H

In practicing the invention, a.closure unit in primarily composed of glass is mounted in a supporting frame I I which can be part of an airplane wall, automobile body, or building structure. According to one form of the invention, the unit III comprises a double glazed construction in which safety glass panels l4 and i5 are spaced in parallel relation to form an air chamber 16 between them. Organic plastic, such as vinyl acetal resin, is employed as interlayer material l1, and glass plates 19 of each panel are bonded to opposite '55 .able air circulation system (not shown).

sidesof the interlayer l1. Cellulose acetate and methyl acrylate 'resins'have also been employed as interlayer material'in laminating glass and it is to be understood that the invention is applicableto structures in which such resins may be used. i

Edge or projecting portions of the interlayer l I can be built up to form integral plastic extensions 20 bridging the space between the edges of.

the laminated units [4 and I5. In installing the multiple glazed unit In, frame elements 24 are clamped upon opposite sides of the extension 20 by means of fasteners 25.. Thedouble glazed unitis thus yieldably mounted in the frame elements without exerting any clamping forces upon the glass itself. U

Under certain conditions it is desirable to circulate air through the chamber l6 between the laminated panels l4 and I5. Instead of perforating or recessing the plastic engaging portions 24 of the frame and the extended portions of the plastic itself, it has been found that openings'26 formed through the safety glass facilitate the installation of the air circulating elements. These openings can be formed at convenient locations, for example, adjacent corner portions of the panel. Such openings can be formed before the glass is laminated and the interlayer l1 positioned in a conventional manner between the glass plates without forming openings in the latter. Additional plastic of the type employed as interlayer material is applied to opposite sides of the latter to fill the opening and then the unit is subjected to heat and pressure in an autoclave according to conventional practice in the lamination of safety glass. A plug 21 in the opening is thus formed integrally with the inter.- layer l1. After the panel has been thus formed, the plug (Fig. 3) is centrally bored or tapped and a support in the form of a nipple 30 is screw threaded or otherwise secured therein. The nipple of each plug can communicate with a suit- Likewise, this type of construction can be combined with a container 32 threade d or otherwise secured upon the nipple and designed to contain a desiccant 34, such as activated alumina, silica gel, calcium chloride, or phosphorous pentoxide;

It is to be understood that the plug 21 can be applied before or after the safety glass has been laminated. If desired, the portion of the interlayer ll traversing the opening is cut from such opening preparatory to insertion of the plug 21 therein. Suflicient heat is applied to the unit to bond the inserted plug integrally to the surround ing'edgesof the interlayerin the opening and also. to the walls of. the glass. defining: the;

opening.

Theplugll can be in-the formof. hard resin, that is,-. resinwhich has; a low percenta e of plasticizer. For example, in thevinyl acetaltype.

plug. This operation can be, accomplished] at.

approximately 180 degrees F.

In the arrangementfshown in: Figs. 2 and-6, the

plug 21 of resin. is provided with an internally: threaded metal disk or anchoring. nut' 40 cm.

bedded therein. The support 30 in the. form of .a nipple is anchored in the plug and to; thenut;

and canine employed. as a support for asuit'e able attachment of the type described above.

Likewise the plugin-connection with these figures,

can bein. the form of resin of the. same, type as that described above. InFig. 6. the, plug is shown before. it has been bored, broken lines- 3.9..

indicating thearea, to be boredor tapped.

In Fig. 4; the plug 21 includes a central or body portion 4| integral'with, orv as a partofthe.

organic plasticillass bonded to. opposite. sides. 01;. the.- interlayer; and; forming: therewith a.

laminated structure, said laminatedstructure haying; opening passing; therethromh'. and

:- plastic. material: integral; with the. inter layer disposed 2. ,A glazing unit comprisingan interlayeroi organic, plastic. lass sheets bonded to sides oi: the; interlayer; andJionning therewith a laminated, structure. saidalaininated structure having an opening. passing. therethrough. plastic. material integral with the plastic inter-lager dis 7 posed; in said opening;,and.a.periorated disk at least partially embedded. in the plastic. material that is dispusedin saidfiopening.

3; A. glazing; unit; comprising. an. 01. organic plastic;v glass. sheets. bonded to; opposite. sides or theinterlayer-andiorming therewith a.

laminated structure.v said; laminated structure having an, opening; passing there hm m. a... periorated plastic-plug integral? with the plastic interlayerr disposed. in saldpopeninfl; and a. nipple connected in; the, perforatedcportion. of said plug to communicate. from; one. side of; the laminated structure. totheother.

interlayer, and in addition an outer button It I of, hard resin is bonded'integrally to the central.

portion. The lug. 21, including the button 42, is

otherwise secured. therein; The hard resin but,- ton provides, forstronger anchorage of the-plug,

V In Fig. 5,. the, plug 21; includes an interlayer; portion 45. traversing the opening and having hard resin buttons 46- bonded integrally 011 01) posite sides thereof. The composite plug. 21 thus Iormed; receives the. nipple bonded or screw. threaded therein.

In the application of the 5.0 of a glass unit. 5|. Pins or, studs 52 of metal, wood, hard resin, or other stlfi material, are.

anchored in the plug in the same manner as the:

nipples are applied inthe structures previously described. The pins 52 carry a panel. 54, such as a. reflector sight rear vision mirror secured' thereto. as lndi'cated'at 56', in any suitable mannet. 'The panel 54 is thusyieldably mounted and in addition to supporting the panel54 in a desired position, the plugs also absorb shocks to which the panel-may be subjected.

It is to be understood thatlaminated glass can be manufactured with the plug 21 unbored (Fig. 6), with or without the nut'fli included therein. Laterthe plug can be bored or tapped toadapt itv to whatever type of attachment that may be required for a particular installation. In a multiple glazed unit the chamber between glass plates can thus be, sealed until ready for use.

Although several forms of the invention have been. shown. and described in detail, it will be ap.. parent to those skilled" in the art that. the; in,- vention is not solimited, but can be included in other forms. without departing from the spirit of the invention or fromthe scope oftheappendedf claims.

I.clairn: v

1. A glazing unit comprising an interlayer of invention: shown, in. Figs.- 7 and 8, the plugs 21 are applied iii-openings- 4'. A glazing; unit comprising an, interlayer of organic plastic; glass sheets bonded to: opposite sides: 01. the interlayer. and. iorming; therewith. a

laminated structure., said. laminated stmcture having, an. opening. passing; therethrougln and adapted to receive the nipple 30- threaded or plastic material .stlfler'andhardenthanthe-plastio interlayer integrally bonded; withthe latter. in saidopening.

5., A glaring unlt;comprising, an interlayerol.

organic plastic, glass sheetsbondedito opposite sides 01 the. interlayer, and forming therewith, a.

laminated structutre, said laminated structure having; an openingpassing thcrethrc h. a perforated plastic plug; integralwitn said interlayer and in. saidopening; aperiorated dishst leastpartiallv embeddeddn. saldphl .andxa nipple.

disposed; in the. perforated plug and connected to said. disk for-communicating. from one: sided thelaminatedstructure. to theother.

6. A glazing unit; comprising an interlayer of organic plastic, glass sheets. bonded to. opposite. sides of said. interlayer and; forming therewitha laminated structure, said structurehaving an opening passing therethrough, a plastic plug in tegral with said. interlayer disposed'in said opening, at least a portion or said plugbeingxelativelyhard and adapted to receive a connection in anchored relation thereto.

7. A glazing unit: comprising an. interlarercf organic, plastic,. glass plates bonded to. Win sides 01 said lnterlayerand forming therewith a. laminated structure, said structurev having an opening passing therethrough, a. piasticrpiug in.- tegral. with said interlayer-and in. said opening, and a. supportanchoredzin. said plug from contact with the glasszplates.

8., A glazing'unltcomprising .aglasspanel having an. opening, therethrough, a. plastic plug disposed in said. opening. and having its: peripheral wall bonded to the wall at the opening, 81111.8. elm- .port harder than. the plastic plusanchored in the latter.

JAMES HERVE}! SHERI'fi. 

